<%@ page import="org.bigjava.user.util.AESUtil" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <link rel="stylesheet" href="style.css">

    <title>登录</title>
	<style type="text/css">
		/* 清除浏览器默认边距，
		使边框和内边距的值包含在元素的width和height内 */

		* {
		    margin: 0;
		    padding: 0;
		    box-sizing: border-box;
		}

		/* 使用flex布局，让内容垂直和水平居中 */

		section {
		    /* 相对定位 */
		    position: relative;
		    overflow: hidden;
		    display: flex;
		    justify-content: center;
		    align-items: center;
		    min-height: 100vh;
		    /* linear-gradient() 函数用于创建一个表示两种或多种颜色线性渐变的图片 */
		    background: linear-gradient(to bottom, #f1f4f9, #dff1ff);
		}

		/* 背景颜色 */

		section .color {
		    /* 绝对定位 */
		    position: absolute;
		    /* 使用filter(滤镜) 属性，给图像设置高斯模糊*/
		    filter: blur(200px);
		}

		/* :nth-child(n) 选择器匹配父元素中的第 n 个子元素 */

		section .color:nth-child(1) {
		    top: -350px;
		    width: 600px;
		    height: 600px;
		    background: #ff359b;
		}

		section .color:nth-child(2) {
		    bottom: -150px;
		    left: 100px;
		    width: 500px;
		    height: 500px;
		    background: #fffd87;
		}

		section .color:nth-child(3) {
		    bottom: 50px;
		    right: 100px;
		    width: 500px;
		    height: 500px;
		    background: #00d2ff;
		}

		.box {
		    position: relative;
		}

		/* 背景圆样式 */

		.box .circle {
		    position: absolute;
		    background: rgba(255, 255, 255, 0.1);
		    /* backdrop-filter属性为一个元素后面区域添加模糊效果 */
		    backdrop-filter: blur(5px);
		    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
		    border: 1px solid rgba(255, 255, 255, 0.5);
		    border-right: 1px solid rgba(255, 255, 255, 0.2);
		    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
		    border-radius: 50%;
		    /* 使用filter(滤镜) 属性，改变颜色。
		    hue-rotate(deg)  给图像应用色相旋转
		    calc() 函数用于动态计算长度值
		    var() 函数调用自定义的CSS属性值x*/
		    filter: hue-rotate(calc(var(--x) * 70deg));
		    /* 调用动画animate，需要10s完成动画，
		    linear表示动画从头到尾的速度是相同的，
		    infinite指定动画应该循环播放无限次*/
		    animation: animate 10s linear infinite;
		    /* 动态计算动画延迟几秒播放 */
		    animation-delay: calc(var(--x) * -1s);
		}

		/* 背景圆动画 */

		@keyframes animate {
		    0%, 100%, {
		        transform: translateY(-50px);
		    }
		    50% {
		        transform: translateY(50px);
		    }
		}

		.box .circle:nth-child(1) {
		    top: -50px;
		    right: -60px;
		    width: 100px;
		    height: 100px;
		}

		.box .circle:nth-child(2) {
		    top: 150px;
		    left: -100px;
		    width: 120px;
		    height: 120px;
		    z-index: 2;
		}

		.box .circle:nth-child(3) {
		    bottom: 50px;
		    right: -60px;
		    width: 80px;
		    height: 80px;
		    z-index: 2;
		}

		.box .circle:nth-child(4) {
		    bottom: -80px;
		    left: 100px;
		    width: 60px;
		    height: 60px;
		}

		.box .circle:nth-child(5) {
		    top: -80px;
		    left: 140px;
		    width: 60px;
		    height: 60px;
		}

		/* 登录框样式 */

		.container {
		    position: relative;
		    width: 400px;
		    min-height: 400px;
		    background: rgba(255, 255, 255, 0.1);
		    display: flex;
		    justify-content: center;
		    align-items: center;
		    backdrop-filter: blur(5px);
		    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
		    border: 1px solid rgba(255, 255, 255, 0.5);
		    border-right: 1px solid rgba(255, 255, 255, 0.2);
		    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
		}

		.form {
		    position: relative;
		    width: 100%;
		    height: 100%;
		    padding: 50px;
		}

		/* 登录标题样式 */

		.form h2 {
		    position: relative;
		    color: #fff;
		    font-size: 24px;
		    font-weight: 600;
		    letter-spacing: 5px;
		    margin-bottom: 30px;
		    cursor: pointer;
		}

		/* 登录标题的下划线样式 */

		.form h2::before {
		    content: "";
		    position: absolute;
		    left: 0;
		    bottom: -10px;
		    width: 0px;
		    height: 3px;
		    background: #fff;
		    transition: 0.5s;
		}

		.form h2:hover:before {
		    width: 53px;
		}

		.form .inputBox {
		    width: 100%;
		    margin-top: 20px;
		}

		/* 输入框样式 */

		.form .inputBox input {
		    width: 100%;
		    padding: 10px 20px;
		    background: rgba(255, 255, 255, 0.2);
		    outline: none;
		    border: none;
		    border-radius: 30px;
		    border: 1px solid rgba(255, 255, 255, 0.5);
		    border-right: 1px solid rgba(255, 255, 255, 0.2);
		    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
		    font-size: 16px;
		    letter-spacing: 1px;
		    color: #fff;
		    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
		}

		.form .inputBox input::placeholder {
		    color: #fff;
		}

		/* 登录按钮样式 */

		.form .inputBox input[type="submit"] {
		    background: #fff;
		    color: #666;
		    max-width: 100px;
		    margin-bottom: 20px;
		    font-weight: 600;
		    cursor: pointer;
		}

		.forget {
		    margin-top: 6px;
		    color: #fff;
		    letter-spacing: 1px;
		}

		.forget a {
		    color: #fff;
		    font-weight: 600;
		    text-decoration: none;
		}
	</style>
</head>

<body>
    <section>
        <!-- 背景颜色 -->
        <div class="color"></div>
        <div class="color"></div>
        <div class="color"></div>
        <div class="box">
            <!-- 背景圆 -->
            <div class="circle" style="--x:0"></div>
            <div class="circle" style="--x:1"></div>
            <div class="circle" style="--x:2"></div>
            <div class="circle" style="--x:3"></div>
            <div class="circle" style="--x:4"></div>
            <!-- 登录框 -->
            <div class="container">
                <div class="form">
                    <h2>登录</h2>
                    <form action="${pageContext.request.contextPath}/loginuser" method="post">
                        <div class="inputBox">
                            <input type="text" placeholder="用户名"  name="userName">

                        </div>
                        <div class="inputBox">
                            <input type="password" placeholder="密码" name="password">

                        </div>
                        <div class="inputBox">
                            <input type="submit" value="登录">

                        </div>
                        <p class="forget">首页<a href="${pageContext.request.contextPath}">
                                点击这里
                            </a></p>
                        <p class="forget">没有账户?<a href="${pageContext.request.contextPath}/sign">
                                注册
                            </a></p>
                    </form>
                </div>
            </div>
        </div>
    </section>
</body>

</html>